Index: calc.texi =================================================================== RCS file: /cvsroot/emacs/emacs/man/calc.texi,v retrieving revision 1.87 diff -u -p -c -r1.87 calc.texi cvs diff: conflicting specifications of output style *** calc.texi 15 Sep 2006 17:44:51 -0000 1.87 --- calc.texi 19 Dec 2006 01:30:59 -0000 *************** solid implementation of Lisp, and the hu *** 1540,1554 **** turned out to be more open-ended than one might have expected. Emacs Lisp doesn't have built-in floating point math, so it had to be ! simulated in software. In fact, Emacs integers will only comfortably ! fit six decimal digits or so---not enough for a decent calculator. So ! I had to write my own high-precision integer code as well, and once I had ! this I figured that arbitrary-size integers were just as easy as large ! integers. Arbitrary floating-point precision was the logical next step. ! Also, since the large integer arithmetic was there anyway it seemed only ! fair to give the user direct access to it, which in turn made it practical ! to support fractions as well as floats. All these features inspired me ! to look around for other data types that might be worth having. Around this time, my friend Rick Koshi showed me his nifty new HP-28 calculator. It allowed the user to manipulate formulas as well as --- 1540,1557 ---- turned out to be more open-ended than one might have expected. Emacs Lisp doesn't have built-in floating point math, so it had to be ! simulated in address@hidden floating point support was ! added to Emacs in version 19. This feature does not, however, support ! arbitrary precision, unlike Calc.}. In fact, Emacs integers will only ! comfortably fit six decimal digits or so---not enough for a decent ! calculator. So I had to write my own high-precision integer code as ! well, and once I had this I figured that arbitrary-size integers were ! just as easy as large integers. Arbitrary floating-point precision ! was the logical next step. Also, since the large integer arithmetic ! was there anyway it seemed only fair to give the user direct access to ! it, which in turn made it practical to support fractions as well as ! floats. All these features inspired me to look around for other data ! types that might be worth having. Around this time, my friend Rick Koshi showed me his nifty new HP-28 calculator. It allowed the user to manipulate formulas as well as